I try to restart a servicio
in case it is destroyed. First I create my servicio
:
public class MyIntentService extends Service {
WebSocketClient mWebSocketClient;
URI uri;
@Override
public void onCreate() {
super.onCreate();
try {
uri = new URI("ws://websockethost:8080");
} catch (URISyntaxException e) {
e.printStackTrace();
}
mWebSocketClient = new WebSocketClient(uri) {
@Override
public void onOpen(ServerHandshake serverHandshake) {
Log.i("Websocket", "Opened");
mWebSocketClient.send("Hello from " + Build.MANUFACTURER + " " + Build.MODEL);
}
@Override
public void onMessage(String s) {
mWebSocketClient.onMessage(s);
if(s.equals("s")){
//notificacion.....
}
}
@Override
public void onClose(int i, String s, boolean b) {
Log.i("Websocket", "Closed " + s);
transfer();
}
@Override
public void onError(Exception e) {
Log.i("Websocket", "Error " + e.getMessage());
}
};
}
public int onStartCommand(Intent intent, int flags, int startId) {
mWebSocketClient.connect();
return START_STICKY;
}
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
public void transfer(){
String code ="half";
Intent intent = new Intent(getApplicationContext(),MainActivity.class);
intent.putExtra("data",code);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
}
@Override
public void onDestroy() {
super.onDestroy();
Intent intent = new Intent("com.example.myapplication.MyIntentService");
intent.putExtra("Value", String.valueOf(mWebSocketClient));
sendBroadcast(intent);
}
}
In the method onDestroy
of servicio
sent information to my BroadcastReceiver
:
public class MyReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (Intent.ACTION_BOOT_COMPLETED.equals(intent.getAction())) {
Log.i("Servicio", "El servicio se detuvo");
context.startService(new Intent(context, MyIntentService.class));
}
}
}
Then in my method OnResume
of my MainActivity
I recover a String
that I am sending as a test to verify that the Servicio
is actually running by means of the BroadcastReceiver
, (I tried without the BroadcastReceiver
starting my normal service in the method onCreate
of MainActivity
and if I received the data), here my MainActivity
:
public class MainActivity extends AppCompatActivity {
public String signal;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//startService(new Intent(this,MyIntentService.class));
}
@Override
protected void onResume() {
super.onResume();
//stopService(new Intent(this,MyIntentService.class));
signal = getIntent().getStringExtra("data");
if (signal!=null){
Toast.makeText(getApplicationContext(),"datos recibidos\n"+signal,Toast.LENGTH_SHORT).show();
}
}
}
And finally record the necessary in my AndroidManifest
:
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver
android:name=".MyReceiver"
android:enabled="true"
android:exported="true"
android:permission="android.permission.RECEIVE_BOOT_COMPLETED">
<intent-filter>
<action android:name="com.example.myapplication.MyIntentService" />
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
<service
android:name=".MyIntentService"
android:exported="false" />
</application>
Now using the BroadcastReceiver
I do not run the servicio
, since I am not receiving the data I should receive using onResume
, and if I try to start servicio
in OnCreate
of MainActivity
the App
does not open.